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  <title>Returns if the specified module is a block algorithm or not</title>

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  <h1 class="refname">mcrypt_module_is_block_algorithm_mode</h1>
  <p class="verinfo">(PHP 4 &gt;= 4.0.2, PHP 5)</p><p class="refpurpose"><span class="refname">mcrypt_module_is_block_algorithm_mode</span> &mdash; <span class="dc-title">Returns if the specified module is a block algorithm or not</span></p>

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 <div class="refsect1 description" id="refsect1-function.mcrypt-module-is-block-algorithm-mode-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="type">bool</span> <span class="methodname"><strong>mcrypt_module_is_block_algorithm_mode</strong></span>
    ( <span class="methodparam"><span class="type">string</span> <code class="parameter">$mode</code></span>
   [, <span class="methodparam"><span class="type">string</span> <code class="parameter">$lib_dir</code></span>
  ] )</div>

  <p class="para rdfs-comment">
   This function returns <strong><code>TRUE</code></strong> if the mode is for use with block
   algorithms, otherwise it returns <strong><code>FALSE</code></strong>. (e.g. <strong><code>FALSE</code></strong> for stream, and
   <strong><code>TRUE</code></strong> for cbc, cfb, ofb).
  </p>
 </div>

 <div class="refsect1 parameters" id="refsect1-function.mcrypt-module-is-block-algorithm-mode-parameters">
  <h3 class="title">参数</h3>
  <p class="para">
   <dl>

    
     <dt>
<em><code class="parameter">mode</code></em></dt>

     <dd>

      <p class="para">
       The mode to check.
      </p>
     </dd>

    
    
     <dt>
<em><code class="parameter">lib_dir</code></em></dt>

     <dd>

      <p class="para">
       The optional <em><code class="parameter">lib_dir</code></em> parameter can contain the
       location where the algorithm module is on the system.
      </p>
     </dd>

    
   </dl>

  </p>
 </div>


 <div class="refsect1 returnvalues" id="refsect1-function.mcrypt-module-is-block-algorithm-mode-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   This function returns <strong><code>TRUE</code></strong> if the mode is for use with block
   algorithms, otherwise it returns <strong><code>FALSE</code></strong>. (e.g. <strong><code>FALSE</code></strong> for stream, and
   <strong><code>TRUE</code></strong> for cbc, cfb, ofb).
  </p>
 </div>

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